HP 750 - Manual (Page 159)

Troubleshooting C4705-90000 8-41
20. Ortho Wiper
The purpose of this test is to check that the ortho wiper functions correctly.
Perform the ortho wiper test as follows:
1 In the Service Tests submenu, scroll to20 OrthoWiper" and press Enter.
SERVICE TESTS
20 Ortho wiper
2 The Testing Wiper / Press Enter to Stop" message is displayed on the frontĆpanel.
3 The Cycles done = # / Press Enter to Stop" message is displayed on the frontĆpanel.
Press Enter tostop the test.
If the Enter button is not pressed during the test, then after 6 cycles, the test will automatically stop.
4 Check the left side of the plotter to see if the ortho wiper is operating correctly.
If there is no movement from the ortho wiper, then the test has failed. To resolve the problem, try
replacing one of the following components:
1 Service Station ' page 6Ć42.
2 Cable assembly ' page 6Ć47.
3 Main PCA ' page 6Ć9.
Only replace one component at a time and perform the “Ortho Wiper” test again before
replacing another component. Using this procedure you will be able to determine exactly which
component failed.